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Updated: May 29, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Bioinspired Hierarchical Photonic Structures with Controllable Polarization and Color for Optical-Multiplexed

Lin-Yue Li¹, Qiang-Wu Tan¹, Xiu-Li Wang¹

¹The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China.

|February 6, 2025

Summary

Researchers developed a new optical multiplexing system using tunable photonic crystals and ethyl cellulose. This technology enables high-capacity data storage and advanced encryption with controllable color and polarization.

Keywords:

anticounterfeiting hierarchical photonic structure optical multiplexing phase retardation polarized light structural color

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Area of Science:

Photonics and Materials Science
Optoelectronics and Information Technology

Background:

Optical multiplexing is crucial for high-capacity data storage and encryption.
Existing photonic materials have limitations in controlling light's spatial distribution due to fixed chiral structures.

Purpose of the Study:

To develop an advanced optical-multiplexed structure with tunable properties for enhanced information storage and encryption.
To overcome the limitations of fixed chiral structures in conventional photonic materials.

Main Methods:

Fabrication of a tunable 1D photonic crystal structure using ethyl cellulose (EC) via self-assembly and shear-aligning.
Integration of orientation texture and chromatic layers for light modulation.
Creation of traceless interfaces between functional layers.

Main Results:

Achieved tunable wavelength and polarization control through ethyl cellulose orientation and chromatic layers.
Demonstrated photonic slices with well-defined polarization states and structural colors.
Ensured high confidentiality and durability via identical component layers and traceless interfaces.

Conclusions:

The developed hierarchical photonic structure offers a promising platform for multiplexed information storage and multichannel 3D/4D encryption.
This strategy enables the creation of traceless, highly confidential photonic units with controllable polarization and color.
The technology advances secure data handling and optical encryption capabilities.